1366 - Incorrect integer value: '' for column `hbl_shop`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', '262u5f8ja4poh5dtt702m4sna6', '18.222.215.20', '1746947993', '1746947993', '/product_info.php?info=p27_800284-Heizspirale-fuer-Elektro-Futterdaempfer-63-Liter.html')

[XT SQL Error]